Last modified: Sept. 28, 2020, 12:56 p.m.
A common species throughout Belgium and known from many localities. This is the commonest member of this family in our country.
Caterpillars are dark, body reddish yellow. The crossbands across the back are dark, often with yellowish bands. Larval development one or two years.
The female is apterous and usually stays in the case. The males are active in afternoon sunshine.
One generation a year: from May till July.
The larva feeds on grasses, lichens and decaying vegetable plant material.